Quantum DLT 8000 Product Manual page 299

PERSISTENT RESERVATION OUT Command (5Fh) (continued)
Table 5-68 Persistent Reservation Type Codes and Their Meanings (continued)
Code Name
3h Exclusive Access
4h Shared Access
5h WRITE Exclusive,
Registrants Only
Description
READS: Exclusive; any command from any initiator other than the initiator
holding the persistent reservation that attempts a transfer from the
target results in a reservation conflict.
WRITES: Exclusive; any command from any initiator other than the initiator
holding the persistent reservation that attempts a transfer to the
target results in a reservation conflict.
ADDITIONAL RESERVATIONS:
READS: Shared; any application client on any initiator may execute commands
that perform transfers from the target to the initiator.
WRITES: Shared; ; any application client on any initiator may execute
commands that perform transfers to the target from the initiator.
ADDITIONAL RESERVATIONS:
READS: Shared; any application client on any initiator may execute commands
that perform transfers from the target to the initiator.
WRITES: Exclusive; any command from an initiator that has not previously
performed a Register service action with the device server that
attempts a transfer to the target results in a reservation conflict
ADDITIONAL RESERVATIONS:
Quantum DLT 8000 Tape System
SCSI Commands
Restricted; any PERSISTENT RESERVATION OUT
command with the Reserve service action from
any initiator other than the initiator holding
the persistent reservation results in a
reservation conflict. The initiator that holds the
persistent reservation can reserve the logical
unit, extents, or elements as long as the
persistent reservations do not conflict with any
reservations already known to the device
server.
Restricted; any PERSISTENT RESERVATION OUT
command with the Reserve service action from
any initiator other than the initiator holding
the persistent reservation results in a
reservation conflict. The initiator that holds the
persistent reservation can reserve the logical
unit, extents, or elements as long as the
persistent reservations do not conflict with any
reservations already known to the device
server.
Allowed; any initiator may reserve the logical
unit, extents, or elements as long as the
persistent reservations to not conflict with any
reservations already known to the device
server.
(continued)
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